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Senior Backend Developer (Ruby on Rails)

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About the Role

We are looking for a Senior Ruby on Rails Developer (Backend Focus) to join a talented international team and contribute to the development of a scalable platform that connects families with educational providers.

This is a direct hire opportunity with the client’s payroll, offering long-term stability and professional growth.

Responsibilities

  • Design, develop, and maintain scalable backend solutions with Ruby on Rails.
  • Solve complex technical challenges related to performance, concurrency, and distributed architecture.
  • Lead technical initiatives and mentor other team members.
  • Collaborate with cross-functional teams (Product, Frontend, DevOps) in an Agile environment.
  • Participate in architectural decisions and support the migration of infrastructure to AWS.
  • Contribute to improving scalability, reliability, and performance of the platform.

Requirements

  • Proven experience with Ruby on Rails in main projects in recent years (not only side projects).
  • Strong track record building and scaling large, complex products (high concurrency, millions of users, critical integrations).
  • Expertise in performance optimization, architecture design, and scalability.
  • Experience leading projects or technical teams in e-commerce, marketplaces, or large-scale digital platforms.
  • General frontend knowledge (React, HTML, CSS, JavaScript) is a plus.
  • Advanced English (C1 or higher, mandatory): you will work closely with international stakeholders.
  • Current residence in Argentina (mandatory).

Tech Stack

  • Languages: Ruby, JavaScript, HTML, CSS
  • Frameworks: Ruby on Rails, React (in some areas of the project)
  • Database: PostgreSQL
  • Infrastructure: Active migration to AWS
  • Methodology: Agile

Benefits

  • Competitive compensation: USD 5,000 – 6,000/month (on client’s payroll) 100% remote work, with occasional visits to the client’s office in Argentina
  • Direct and stable employment with the client
  • Opportunity to work with international stakeholders and high-level engineering teams
  • Involvement in complex projects with continuous learning opportunities

Selection Process

  • Interview with Workana
  • Interview with People (Client)
  • Technical interview with the Team Lead (based in Silicon Valley)
  • Two final interviews with the client (one technical, one cultural)

Apply now and join a global team building impactful platforms.

  • Location: Argentina (mandatory)
  • Modality: Full-time, direct hire on the client’s payroll
  • Company: Software company based in Pilar, Buenos Aires, providing services to global clients
  • Industry: Edtech / Marketplace for educational activities

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What this application asks

workable

First name, Last name, Email, Phone, Summary, Resume, What is your expected MONTHLY salary in USD as a contractor?, How frequently do you use AI tools in your professional work?, Which statement best describes your current AI usage?, Which AI tools do you use in your daily work and what do you use them for? (Please list the tool and describe its specific use case.)

  • Do you currently reside in Argentina? yes / no
  • Do you have an advanced English level (C1 or higher) and feel comfortable in interviews fully in English? yes / no
  • In your most recent role, have you actively developed in Ruby on Rails? choose any
  • Have you worked on a product handling large scale or high concurrency (e.g., millions of users, complex integrations, distributed systems)? yes / no
  • Have you led technical initiatives, projects, or teams in your last roles? yes / no
  • Have you built or integrated Ruby on Rails systems with critical platforms (e.g., payments, marketplaces, ERPs)? written answer
  • Have you participated in performance optimization or architectural decisions for distributed systems? written answer
  • What is your expected monthly gross salary in USD for this role?

See also

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